Droual R, Bickford A A, Charlton B R, Cooper G L, Channing S E
California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California-Davis, Turlock 95381.
Avian Dis. 1990 Oct-Dec;34(4):1009-16.
Two cases of infectious coryza in meat chickens are reported. The first case involved 6-week-old broiler chickens in which only Haemophilus paragallinarum was isolated. The second case involved 11-week-old roaster chickens in which H. paragallinarum and Mycoplasma synoviae were isolated. Both farms were in close proximity to layer-chicken farms where infectious coryza had been previously diagnosed. In both cases, only certain houses on the farm were affected, and mortality in these houses increased slightly. At processing, the condemnation rates for affected houses were considerably higher than rates for unaffected houses. Condemnations for affected houses were mostly due to airsacculitis. A dissecting fibronopurulent cellulitis was a prominent lesion in the second case. This lesion could lead to confusion with chronic fowl cholera and swollen-head syndrome.
报道了两例肉鸡传染性鼻炎病例。第一例涉及6周龄的肉鸡，仅分离出副鸡嗜血杆菌。第二例涉及11周龄的烤鸡，从中分离出副鸡嗜血杆菌和滑液支原体。两个农场都紧邻之前已诊断出传染性鼻炎的蛋鸡养殖场。在这两起病例中，农场中只有特定的鸡舍受到影响，这些鸡舍的死亡率略有上升。在加工时，受影响鸡舍的淘汰率明显高于未受影响的鸡舍。受影响鸡舍的淘汰主要是由于气囊炎。在第二例中，解剖时发现纤维脓性蜂窝织炎是一个突出的病变。这种病变可能会导致与慢性禽霍乱和肿头综合征相混淆。
